Minimal factorisations of groups can be used in cryptography. It is not yet known if one exists for each finite group, although it has been shown that a minimal counterexample of a group without one must be simple. We prove existence of minimal factorisations for some sporadic groups.
"On Minimal Factorisations of Sporadic Groups." Experiment. Math. 13 (4) 435 - 440, 2004.